mirror of
https://github.com/ArchiveBox/ArchiveBox
synced 2024-11-26 14:10:20 +00:00
113 lines
3.7 KiB
Python
113 lines
3.7 KiB
Python
__package__ = 'archivebox'
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import os
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import shutil
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from json import dump
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from pathlib import Path
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from typing import Optional, Union, Set, Tuple
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from subprocess import run as subprocess_run
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from crontab import CronTab
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from atomicwrites import atomic_write as lib_atomic_write
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from .util import enforce_types, ExtendedEncoder
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from .config import OUTPUT_PERMISSIONS
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def run(*args, input=None, capture_output=True, text=False, **kwargs):
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"""Patched of subprocess.run to fix blocking io making timeout=innefective"""
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if input is not None:
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if 'stdin' in kwargs:
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raise ValueError('stdin and input arguments may not both be used.')
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if capture_output:
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if ('stdout' in kwargs) or ('stderr' in kwargs):
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raise ValueError('stdout and stderr arguments may not be used '
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'with capture_output.')
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return subprocess_run(*args, input=input, capture_output=capture_output, text=text, **kwargs)
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@enforce_types
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def atomic_write(path: Union[Path, str], contents: Union[dict, str, bytes], overwrite: bool=True) -> None:
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"""Safe atomic write to filesystem by writing to temp file + atomic rename"""
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mode = 'wb+' if isinstance(contents, bytes) else 'w'
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# print('\n> Atomic Write:', mode, path, len(contents), f'overwrite={overwrite}')
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with lib_atomic_write(path, mode=mode, overwrite=overwrite) as f:
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if isinstance(contents, dict):
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dump(contents, f, indent=4, sort_keys=True, cls=ExtendedEncoder)
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elif isinstance(contents, (bytes, str)):
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f.write(contents)
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@enforce_types
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def chmod_file(path: str, cwd: str='.', permissions: str=OUTPUT_PERMISSIONS) -> None:
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"""chmod -R <permissions> <cwd>/<path>"""
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root = Path(cwd) / path
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if not root.exists():
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raise Exception('Failed to chmod: {} does not exist (did the previous step fail?)'.format(path))
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for subpath in Path(path).glob('**/*'):
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os.chmod(subpath, int(OUTPUT_PERMISSIONS, base=8))
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@enforce_types
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def copy_and_overwrite(from_path: str, to_path: str):
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"""copy a given file or directory to a given path, overwriting the destination"""
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if os.path.isdir(from_path):
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shutil.rmtree(to_path, ignore_errors=True)
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shutil.copytree(from_path, to_path)
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else:
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with open(from_path, 'rb') as src:
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contents = src.read()
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atomic_write(to_path, contents)
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@enforce_types
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def get_dir_size(path: str, recursive: bool=True, pattern: Optional[str]=None) -> Tuple[int, int, int]:
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"""get the total disk size of a given directory, optionally summing up
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recursively and limiting to a given filter list
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"""
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num_bytes, num_dirs, num_files = 0, 0, 0
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for entry in os.scandir(path):
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if (pattern is not None) and (pattern not in entry.path):
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continue
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if entry.is_dir(follow_symlinks=False):
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if not recursive:
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continue
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num_dirs += 1
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bytes_inside, dirs_inside, files_inside = get_dir_size(entry.path)
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num_bytes += bytes_inside
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num_dirs += dirs_inside
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num_files += files_inside
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else:
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num_bytes += entry.stat(follow_symlinks=False).st_size
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num_files += 1
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return num_bytes, num_dirs, num_files
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CRON_COMMENT = 'archivebox_schedule'
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@enforce_types
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def dedupe_cron_jobs(cron: CronTab) -> CronTab:
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deduped: Set[Tuple[str, str]] = set()
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for job in list(cron):
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unique_tuple = (str(job.slices), job.command)
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if unique_tuple not in deduped:
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deduped.add(unique_tuple)
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cron.remove(job)
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for schedule, command in deduped:
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job = cron.new(command=command, comment=CRON_COMMENT)
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job.setall(schedule)
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job.enable()
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return cron
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